Hydromagnetic dynamos in rotating spherical fluid shells in dependence on the Prandtl number, density stratification and electromagnetic boundary conditions

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985530%3A_____%2F14%3A00440703" target="_blank" >RIV/67985530:_____/14:00440703 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1515/congeo-2015-0007" target="_blank" >http://dx.doi.org/10.1515/congeo-2015-0007</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1515/congeo-2015-0007" target="_blank" >10.1515/congeo-2015-0007</a>

Result language

angličtina

Original language name

Hydromagnetic dynamos in rotating spherical fluid shells in dependence on the Prandtl number, density stratification and electromagnetic boundary conditions

Original language description

We present an investigation of dynamo in a simultaneous dependence on the non-uniform stratification, electrical conductivity of the inner core and the Prandtl number. Computations are performed using the MAG dynamo code. In all the investigated cases, the generated magnetic fields are dipolar. Our results show that the dynamos, especially magnetic field structures, are independent in our investigated cases on the electrical conductivity of the inner core. This is in agreement with results obtained in previous analyses. The influence of non-uniform stratification is for our parameters weak, which is understandable because most of the shell is unstably stratified, and the stably stratified region is only a thin layer near the CMB. The teleconvection isnot observed in our study. However, the influence of the Prandtl number is strong. The generated magnetic fields do not become weak in the polar regions because the magnetic field inside the tangent cylinder is always regenerated due to t

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

DE - Earth magnetism, geodesy, geography

OECD FORD branch

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Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2014

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Contributions to Geophysics & Geodesy

ISSN

1335-2806

e-ISSN

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Volume of the periodical

44

Issue of the periodical within the volume

4

Country of publishing house

SK - SLOVAKIA

Number of pages

20

Pages from-to

293-312

UT code for WoS article

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EID of the result in the Scopus database

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